Particle detection and imaging using the Medipix and Timepix chips

13.12.2017 11:15 – 12:15

Hybrid pixel detectors were first developed for the LHC vertex detectors as they provided noise hit free images of ionising radiation with good time tagging precision (25ns). For these experiments, high resistivity silicon was the sensor material of choice. However, for efficient X-ray detection higher-Z materials are needed. A feature of hybrid pixel detectors is that the same readout ASIC can be combining various detector types: semiconductor, gas, or Micro Channel Plate according to the type of particle to be detected. The Medipix ASICs permit frame-based energy sensitive particle counting. Medipix2 and Medipix3 have been used in a number of imaging applications and some of these will be described. The Timepix ASICs permit time tagging of individual particle hits and the most recent Timepix3 chip provides data driven (rather than frame-based) readout. This talk will introduce briefly hybrid pixel detector technology, describe the various readout chips and cover some applications ranging from molecular biology to medical imaging, from X-ray non-destructive testing to material analysis. A live demonstration of particle detection will be included.


Bâtiment: Ecole de Physique

Grand Auditoire A
24, quai Ernest-Ansermet

Organisé par

Département de physique nucléaire et corpusculaire


Michael Campbell, CERN

entrée libre


Catégorie: Séminaire

Mots clés: Particle detetection, Medipix Timepix chips

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